TY  - BK
AU  - Schafer,R.L.
AU  - Gupta,S.C.
AU  - Horn,R.
AU  - Johnson,C.E.
AU  - Koolen,A.J.
TI  - Future research needs in soil compaction
SN  - 0149-9890
U1  - 92-078733 
PY  - 1990///
KW  - Soil chemistry and physics
N1  - references. Paper presented at the 1990 International Summer Meeting of the American Society of Agricultural Engineers, June 24-27, 1990, Columbus, Ohio
ER  -